Centrifugal machine for the manufacture of foundry-cores.



M. FAUQUET. UENTRIPUGAL MACHINE FOR. THE MANUFACTURE OF FOUNDRY (FORES- APPLICATION FILED JAN.12, 1914.

.1 099 74( Patented June 9, 19M

M. FAUQUE'L.

GENTRIFUGAL MACHINE FOR'THE MANUFACTURE OF FOUNDRY GOEES.

APPLICATION FILED JAN. 12, 1914.

1,099,740, Patented June 9,1914.

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APPLICATION FILED JAN. 12, 1914.

Patented Juile 9, 1914.

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APPLICATION FILED JAN. 12, 1914.

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GENTRIFUGAL MACHINE FOR THE MANUFACTURE OF FOUNDRY corms.

Patented June 9, 1914.

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boxes. Figs. 4 to 6 pins the m. Eli) gear-nit ants "I rift MAUZELIGE EAUQUET, GE FONT-AUDEMER, FRANCE.

cnnrmruear. MACHINE roe 'rnn Manor-Across or FUUlIDRY-CORE Specification of Letters Patent.

' Patented June 9, 1914i.

Application filed January 12, 1914. Serial No. 811,740.

To rZZZ whom it may concern:

Be it known that I, MAnnIor. FAU UET, a citizen of the French Republic, and resident of Pont-Audemer, France, have invented a new and useful Centrifugal Machine for the Manufacture of Foundry- Cores, which is fully set for n. e following specification.-

This invention relates to a machine can ploying centrifugal force, in the manufactu're ot molding cores, for introducing the sand into, and for distributing and compressing it in, the boxes arranged in a C11- cle on a mount which carries them around its center in a rapid movement of rotation.

In order to make the following explanations. as clear as possible, the accompanying drawings represent by way of example the centrifugal machine for the manufacture-o. cores according to this invention.

Figure 1 is an elevation of the machine in which the rotating elementwhich forms the main feature of the invention, and the feeding apparatus for the sand, are shown in section. Fig. 2 isa horizontal cross-secshowing the arrangement of the boxes on the rotating element. Fig. 3 is a fragmentai view simi lar'to Fig. 1, but showing the position of parts at the moment of the opening of the relate to a modified construction of the machine. In this construction which also has a "vertical axis, the rotating parts are driven from below. The same figures show at the same time a modified means for closing the rotating ele ment. Fig. 4 is an elevation, with the rotating element in section. Fig. 5 is a plan View ofFig. 4e and Fig. 6 is an enlaged section on line 22, Fig. 5, showing details of a closing bolt. Figs. 7 and 8 relate to another modified construction of the machine. In this construction the axis is horizontal; Fig. 7 is an elevation with the rotating elements in section, the machine in motion. Fig. 8 is an elevation, the machine being stopped and shown during the opening of the boxes.

The machine inquest-ion comprises'a iron frame A (Fig.1) proyided at the a in which rotates a hoilo' spindle C through the interior of thesandj is admitted. At the lower the spi le Q is crowed and ow which is ecured a ring a litovidedbiiits lower surface with one of the two mating series of recesses that unite to form the mold cavities 0 constituting the core-boxes, these cavities opening toward the center of the apparatus to permit them to receive sand. The remainder of the rotating element is constituted: by a lower disk E on which is placed another ring 6 provided at its upper surface with the series of recesses complemental to those ofthe ringa. The rings a and 7) are accurately jointed, so as to avoid any leakage of'sand. Recesses d and projections e -(F1g. 2) arranged specially on the joint plane of the said rings, insure perfect coincidence of the I corebox parts-comprised in 'e'ach ofthem. The upper disk .D and the lower disk E are secured together .by means or" bolts f carried by the former near its edgeand heald by springs g 1n closed position. 'The use of such bolts is not absolutely essential, and there will be subsequently described anothemclosing arrangement which, like the preceding one, must be considered merely as an example. The disks D and E are provided near the center, one with a concavesurface, and the other with a convex surface, between which is left a space or chamber F intended to receive sand on its admission into the apparatus. The central convexpart of the lower disk E is arranged so that, as soon as the sand arrives, center simply by the action of gravity.

The chamber F is separated from the impression rings a and Z2 by a toothed ring G secured to the lower disk E and provided with openings h widened toward the center of the apparatus, in order to assist penetration of sand into. the impressions, to the inlet of which the said openings correspond exactly. The ring Gis chieflyintended to cut the sand at ramming of the cores,- by a slight rotation of the bottom disk relatively-to the various other parts ctmstituting' the rotatingv element. Under-the lower dislrE in its'center, is secured a vibrator J inten edto shake the sand'during the opening-of the boxes. The parts of therotating element are preferably of aluminium or of other lightmetal or alloy. The lower partof the frame is pro-. videdwith two guide bearings Hand I through-which passesjfreel g cylindrical rod K vertically adjustable strict 3 'the'action of system of lovers T0 the u pper end of the rod K is secured a'fla nged cup which when it rises opens the bolts 1 and rethe inlet to the boxes after the it moves away from the i ceives the lower disk E carrying the ring I). The receiving cup M is provided at diametrically-opposite points with two angle parts i which prevent its rotation about its axis, as they engage ribs on the uprights of the frame. These two angle parts i must penetrate into recesses or notches made for the purpose in the rib k which projects below the disk E, in order to prevent the rotation of the latter during the cutting down of the cores-and the o ening of the boxes. At the upper part of t e machine, the hollow spindle C carries'fast and loose pulleys N and O, and also a funnel P whi rotates with the spindle and terminates in a collar 1 intended to prevent the sand from being seat- 7 tered during the working. At the extreme top of the machine is arranged a stationary apparatus Q, intended to feed sand. It consists of an upper tank m of preferably conical shape, and a addle wheel n rotatable about a horizonta axis in a case 0 with which it forms a tight joint, thus insuring a perfect feed" of sand. The depending throat p on said case opens into the funnel P.

The foregoing relates however only to one construction of the machine. .It is obvious" that theinvention comprises also-any other constructions comprising the rotating element described, whether the latter rotate in a horizontal plane or in a vertical plane, whatever be the method of securing together the disks or the said element, whatever be the drive of the element and whatever he the method of opening of the boxes. The invention is therefore capable of being carried out in numerous ways.

Figs. 4 and 5 show a ty e of machine which differs from the type s own in Fig. 1 first, in that it is driven from below, and, secondly, in that the opening ofthe boxes is effected by raising the upper disk D and its ring a. This r sing movement is produced by an admission of air or water under ressure below a piston B (Fig. 4:) which, inrising, lifts 'a shouldered ring T by means ofa air of vertical rods 9 which are connecte to a cross-head S afiixed to the piston, said rods being slidably engaged with suitable guidesr and 8. Two vibrators t are made integral with the ring T. Moreover, the tightening of the two disks D and 'E,

7 against.- eachother,is insured by means of hooks to (Figs. 4 to .6) secured to the bottom disk E and assing'through the upper disk. D. Under t c said hooks engage independ-v ent bolts 42 pivoted tolpins w and held in the closing position 'by' sprin s y; Simultaneous openin of the bolts is effected by imparting a s ight clockwise rotarymovement ,to a ring U which rests upon said boltsand is arranged concentrically with said disks, this ring being formed with slots w through which project upstanding studs .2 fixed to the'bolts. The said'ring is held in one or the other of its two positions, corresponding to the open or closed positions of the bolts c, by means of a bolt V which alternately engages one or the other of the stops arranged for that purpose on the upper disk.

Figs. 7 and 8 show, also b way 'of example, another construction 0 the machine. In this construction, the rotating element constituted by the disks D and E and their rings a and b is movable in a vertical plane around the horizontal axis X'-X, (Fig. 7 This element, which is balanced by a weight Z'and provided with the pulley N- secured to its driving spindle, is designed to oscillate, when the machine is stopped, about a spindle Y carried by the frame A,

and then to assume the osition shown in Fig. 8, in which the opening of the boxes is effected, for instance, in the same .manner and by the same means as those indicated for one or the other of the machines hereinbefore described. The introduction of sand takes place b meansof a movable tube WV. machine comprises any con- This type 0 structions in which the boxes arranged side by side in any number, have a movement of rotation about a horizontal axis.

Claims.

1. In a centrifugal machine for making molding cores, the combination with a driving shaft, of a disk mounted thereon,.a movable disk adapted tobe fixed to or removed from said disk, said two disks forming a chamber between them adapted to receive sand, coo eratin rings on the adjacent face of said isksv a apted to form a series vof radial core boxes openin into said chamber, and a toothed valveike ring adapted to make and break communication between the chamber and the core boxes, and to sever the sand at the-inner ends of the cores.

2'. In a centrifugal machine for making "molding cores, the combination with a driving shaft, of a disk mounted thereon, a mov able disk adapted to be fixed to or removal from said disk, said two disks forming a chamber between them adapted to receive -sand, cooperating rings on the adjacent faces of said disks adapted to form a series of radial core boxes 0 ening intojsaid chamber, means for connectlng the said diskstogether, means for removing the movable disk and, a toothed valve-like ring adapted to make and break communication between the chamberand the core boxes, and to severthe sand at the inner ends of the cores.

3. In acentrifugal machine for making molding cores, the combination with a driving shaft, of a, disk mounted'thereon, a movable disk ada ted to bejfixed to or removed from said isk, said two disks fol-rm ing a chamber between them adapted tore ceive sand, means for feeding sand to said chamber, cooperating rings on thead'jacent faces of said disks adapted to form a series of radial core boxes opening into said cham her, and a toothed valve-like ring adapted to make and break communication between the chamber and the core boxes, and to sever the sand at the inner ends of the cores.

4. In a centrifugal machine for making molding cores, the combination with a driving shaft, of a disk mounted thereon, a movable disk adapted to be fixed to or removed from said disk, said two disks forming a chamber between them adapted to receive sand, meansfor feeding sand to said chamber, cooperating rings on the adjacent faces of said disks adapted to form a series of radial core boxes opening into said chamber, means for connecting the said disks together, means for removing the movable disk, and a toothed valve-like ring adapted to make and break communication between the chamber and the core boxes, and to sever the sand at form a series of radial core boxes opening into said chamber, and a toothed valve-like ring adapted to make and break communication between the chamber and the core boxes, and to sever the sand at the inner ends of the cores.

6. In a centrifugal machine for making molding cores, the combination with a hollow driving shaft, of a disk mounted thereon, a movable disk adapted to be fixed to or removed from said disk, said two disks forming a chamber between them adapted to receive sand, means for feeding sand comprising a funnel-coaxial with said hollow shaft and a rotary sand-feeding device opening into said funnel, cooperating rings on the adjacent faces of said disks adapted to form a series of radial core boxes opening into said chamber, means for connecting the said disks together, means for removing the movable disk, and a toothed valve-like ring adapted to make and break communication between the chamber and the core boxes, and

to sever the sand at the inner ends of the cores. t

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

MAURICE FAUQUET. Witnesses Enaroxn I'IAZARD, h'lAURlCE DAUJOU. 

